Re: Rogham - how long does it last
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Rhogam needs to be given with each pregnancy, unless it is certain the FOB is Rh neg, so in other words, it doesn't "last" , it could be 4 weeks or 10 years, if it's a new pregnancy she needs a new shot, each fetus has the potential to be Rh incompatible, if those fetal cells get into the maternal circulation she can develop antibodies against future pregnancies with devastating results, hope that helps
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